Battery shell, battery, battery pack and electric equipment

Abstract

The utility model relates to a battery shell, a battery, a battery pack and electric equipment, the battery shell comprises a shell, a support frame and a sealing piece, the shell comprises a shell main body and an extension part, the shell main body forms an accommodating space and is provided with an opening, and the extension part is arranged in the accommodating space; the shell body is provided with an opening, the extending part is connected to the shell body and extends towards the containing space from the opening, the supporting frame is arranged in the containing space, at least one part of the supporting frame is arranged on the extending part in a sleeving mode and abuts against the extending part, the sealing piece is installed on the extending part through the opening, and the sealing piece is arranged in the containing space. And the sealing piece is extruded by the extension part to generate elastic deformation so as to be matched with the extension part in a sealing manner. The battery shell can ensure the sealing effect of the sealing element on the opening.

Description

Technical Field

[0001] The present disclosure relates to the technical field of batteries, and more particularly, to a battery housing, a battery, a battery pack, and an electrical device. Background Art

[0002] In order to facilitate the injection of electrolyte into the battery, an opening structure is formed on the housing of the battery. At present, in order to improve the volumetric energy density of the battery, the thickness of the battery housing is getting thinner and thinner, which results in a thinner opening structure formed by stamping and cannot ensure the sealing effect of the seal installed in the opening. Summary of the Utility Model

[0003] The object of the present disclosure is to provide a battery housing, a battery, a battery pack, and an electrical device, and the battery housing can ensure the sealing effect of the seal on the opening.

[0004] To achieve the above object, according to the first aspect of the present disclosure, there is provided a battery housing, the battery housing including an outer shell, a support frame, and a seal. The outer shell includes a shell body and an extension portion. The shell body forms an accommodation space and is provided with an opening. The extension portion is connected to the shell body and extends from the opening toward the accommodation space. The support frame is disposed in the accommodation space, at least a part of the support frame is sleeved on the extension portion and abuts against the extension portion. The seal is installed on the extension portion through the opening, and the seal is elastically deformed by the extrusion of the extension portion to be in sealing cooperation with the extension portion.

[0005] Optionally, the battery housing includes a terminal assembly. The shell body is provided with a terminal installation portion for installing the terminal assembly. The terminal installation portion is spaced apart from the opening. The terminal assembly includes an insulating frame. The insulating frame is arranged in the accommodation space and is connected to the shell body. The support frame is connected to the insulating frame.

[0006] Optionally, the support frame is connected to the insulating frame by a plug-in connection.

[0007] Optionally, the support frame includes a frame body and a split member. The frame body is provided with an avoidance opening. The frame body is plug-in connected to the insulating frame in a first direction. The extension portion extends into the avoidance opening in the first direction. The split member is connected to the frame body and jointly forms a sleeve hole for sleeving the extension portion with the frame body. The first direction is perpendicular to the extending direction of the extension portion.

[0008] Optionally, the frame body is connected to the insulating frame through a plug-in structure. The plug-in structure includes a plug-in groove and a plug-in block that cooperate with each other. The plug-in groove extends in the first direction. One of the frame body and the insulating frame is provided with the plug-in groove, and the other is provided with the plug-in block.

[0009] Optionally, the split member is connected to the frame body through a snap connection structure, and the snap connection structure includes a card slot and a snap block that cooperate with each other. One of the split member and the frame body is provided with the card slot, and the other is provided with the snap block.

[0010] Optionally, the frame body includes a first boss. The first boss extends from the frame body away from the terminal assembly and forms a first arc surface. The end surface of the first boss in the first direction forms the card slot. The split member includes a second boss, and the second boss forms a second arc surface and the snap block. The snap block is snap-connected to the card slot, and the first arc surface and the second arc surface are joined together to form the inner wall surface of the sleeving hole.

[0011] Optionally, the frame body includes a first support surface. The first support surface extends from the frame body away from the terminal assembly and is connected to the end surface of the first boss. The split member includes a connecting flange. The connecting flange is connected to the second boss and protrudes radially outward along the second boss. The connecting flange forms a second support surface. The second support surface extends obliquely from the edge of the connecting flange toward the end surface of the second boss. The extending portion includes a support section. The support section extends obliquely from the housing body toward the accommodation space, and at least part of the support section is supported on the first support surface and the second support surface.

[0012] Optionally, the extending portion further includes a connecting section and a mating section. The connecting section is connected between the support section and the mating section and overlaps the first boss and the second boss. The mating section extends from the connecting section toward the accommodation space, and the first arc surface and the second arc surface jointly surround the mating section.

[0013] Optionally, the inner diameter of the sleeving hole is K, the diameter of the sealing member is d, the wall thickness of the extending portion is T, and the gap between the first arc surface or the second arc surface and the mating section is L. [d / (K - 2T - 2L)] ≥ 1.1.

[0014] Optionally, the gap L between the first arc surface or the second arc surface and the mating section is greater than or equal to 0.05 mm.

[0015] Optionally, the gap L between the first arc surface or the second arc surface and the mating section is equal to 0.10 mm.

[0016] Optionally, the battery housing further includes a sealing cover. The sealing cover covers the opening and is hermetically connected to the housing body.

[0017] According to a second aspect of the present disclosure, a battery is provided, and the battery includes the above-mentioned battery housing.

[0018] According to a third aspect of the present disclosure, a battery pack is provided, and the battery pack includes the above-mentioned battery.

[0019] According to a fourth aspect of the present disclosure, an electrical device is provided, and the electrical device includes the above-mentioned battery, or the electrical device includes the above-mentioned battery pack.

[0020] Through the above technical solution, the housing body forms a receiving space and is provided with an opening. In this way, the electrolyte can be injected into the receiving space through the opening; in addition, the extending portion extends from the opening toward the receiving space, at least a part of the support frame is sleeved on the extending portion and abuts against the extending portion, and the sealing member undergoes elastic deformation under the extrusion of the extending portion. In this way, the support frame can abut against the outside of the extending portion to strengthen the structural strength of the extending portion, ensuring that the extending portion can fully squeeze the sealing member to cause elastic deformation of the sealing member, and further ensuring the sealing effect of the sealing member on the opening and the extending portion.

[0021] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0023] Figure 1 is a structural diagram of the battery housing provided by the present disclosure;

[0024] Figure 2 is a partial schematic diagram of the battery housing provided by the present disclosure;

[0025] Figure 3 is a connection schematic diagram of the terminal assembly and the support frame provided by the present disclosure;

[0026] Figure 4 is Figure 3 an enlarged view of part A in

[0027] Figure 5 is a structural diagram of the support frame provided by the present disclosure;

[0028] Figure 6 is a structural diagram of the frame body provided by the present disclosure;

[0029] Figure 7 is Figure 6 an enlarged view of part B in

[0030] Figure 8 is a structural diagram of the split part provided by the present disclosure;

[0031] Figure 9 It is a schematic installation diagram of the support frame, extension part and seal provided by the present disclosure.

[0032] Explanation of reference numerals

[0033] 100, outer shell; 110, extension part; 111, support section; 112, connection section; 113, mating section; 120, opening; 130, first housing; 140, second housing; 141, receiving portion; 200, support frame; 210, frame body; 211, avoidance opening; 212, insertion block; 213, first boss; 2131, first arc surface; 214, first support surface; 220, split part; 221, clamping block; 222, second boss; 2221, second arc surface; 223, second support surface; 230, connecting frame body; 240, support seat; 241, support plate; 242, first reinforcing rib; 243, second reinforcing rib; 310, seal; 320, seal cover; 400, terminal assembly; 410, insulating frame. Detailed implementation manners

[0034] The following will describe in detail the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present disclosure, and are not used to limit the present disclosure.

[0035] In the present disclosure, unless otherwise stated, the orientation terms such as "inner" and "outer" refer to "inner" and "outer" relative to the own contour of the corresponding component, and the "first direction" refers to the L1 direction in the accompanying drawings of the specification. In addition, the terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another element, and do not have sequentiality and importance. In addition, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements. The above definitions are only for explaining and illustrating the present disclosure, and should not be construed as a limitation to the present disclosure.

[0036] According to the first aspect of the present disclosure, a battery housing is provided, referring to Figure 1 , Figure 2 and Figure 9As shown, the battery housing includes an outer shell 100, a support frame 200, and a seal 310. The outer shell 100 includes a shell body and an extension portion 110. The shell body forms a receiving space and is provided with an opening 120. The extension portion 110 is connected to the shell body and extends toward the receiving space from the opening 120. The support frame 200 is disposed in the receiving space. At least a part of the support frame 200 is sleeved on the extension portion 110 and abuts against the extension portion 110. The seal 310 is installed on the extension portion 110 through the opening 120, and the seal 310 is elastically deformed by the extrusion of the extension portion 110 to be sealingly engaged with the extension portion 110.

[0037] Through the above technical solution, the shell body forms a receiving space and is provided with an opening 120. In this way, the electrolyte can be injected into the receiving space through the opening 120. In addition, the extension portion 110 extends toward the receiving space from the opening 120. At least a part of the support frame 200 is sleeved on the extension portion 110 and abuts against the extension portion 110. The seal 310 is elastically deformed by the extrusion of the extension portion 110. In this way, the support frame 200 can abut against the outer side of the extension portion 110 to strengthen the structural strength of the extension portion 110, ensuring that the extension portion 110 can fully squeeze the seal 310 to cause elastic deformation of the seal 310, thereby ensuring the sealing effect of the seal 310 on the opening 120 and the extension portion 110.

[0038] In the battery housing provided by the present disclosure, the support frame 200 can be installed in any suitable manner. As an exemplary embodiment, referring to Figures 2 to 4 As shown, the battery housing may include a terminal assembly 400. The shell body may be provided with a terminal installation portion for installing the terminal assembly 400. The terminal installation portion may be spaced apart from the opening 120. The terminal assembly 400 may include an insulating frame 410. The insulating frame 410 may be arranged in the receiving space and connected to the shell body. The support frame 200 may be connected to the insulating frame 410. In this way, the support frame 200 can be connected to the insulating frame 410, and the insulating frame 410 can be connected to the shell body. That is to say, the support frame 200 can be stably installed on the shell body through the insulating frame 410 to ensure the position of the installed support frame 200 relative to the extension portion 110 and the opening 120, thereby ensuring the supporting effect of the support frame 200 on the extension portion 110. In addition, the connection between the terminal assembly 400 and the shell body can be realized through the terminal installation portion, so as to simplify the parts (such as the cover plate) of the battery housing.

[0039] In the battery housing provided by the present disclosure, the support frame 200 and the insulating frame 410 can be connected in any suitable manner. As an exemplary embodiment, referring to Figure 3 and Figure 4 As shown, the support frame 200 and the insulating frame 410 can be connected by plugging.

[0040] In the battery housing provided by the present disclosure, the support frame 200 can be constructed in any suitable manner. As an exemplary embodiment, refer to Figures 4 to 6 As shown in, the support frame 200 can include a frame body 210 and a splitting member 220. The frame body 210 can be provided with an avoidance opening 211. The frame body 210 can be connected to the insulating frame 410 in a plug-in connection along a first direction. The extending portion 110 can extend into the avoidance opening 211 along the first direction. The splitting member 220 can be connected to the frame body 210 and jointly form a sleeve hole for sleeving the extending portion 110 with the frame body 210. The first direction can be perpendicular to the extending direction of the extending portion 110. Among them, the extending portion 110 has a first side and a second side arranged oppositely along the first direction. In this way, when installing the support frame 200, first, the frame body 210 is plugged into the insulating frame 410 along the first direction. During this process, the avoidance opening 211 will approach the extending portion 110 along the first direction and surround the first side of the extending portion 110. Second, the splitting member 220 is installed on the frame body 210 along the first direction. During this process, the splitting member 220 can enter the avoidance opening 211 along the first direction and surround the second side of the extending portion 110. In summary, the frame body 210 and the splitting member 220 can jointly form a sleeve hole to sleeve the extending portion 110. Among them, by providing the avoidance opening 211, it can be avoided that there is movement interference between the frame body 210 and the extending portion 110 during the installation of the frame body 210. In addition, by providing the splitting member 220, it is convenient to assemble the support frame 200.

[0041] In the battery housing provided by the present disclosure, the frame body 210 can be installed and connected to the insulating frame 410 in any suitable manner. As an exemplary embodiment, refer to Figure 3 and Figure 4 As shown in, the frame body 210 and the insulating frame 410 can be connected through a plug-in structure. The plug-in structure can include a plug-in groove and a plug-in block 212 that cooperate with each other. The plug-in groove can extend along the first direction. One of the frame body 210 and the insulating frame 410 can be provided with a plug-in groove, and the other can be provided with a plug-in block 212.

[0042] Among them, the plug-in groove and the plug-in block 212 can be arranged in any suitable manner. As an exemplary embodiment, refer to Figure 3 and Figure 4 As shown in, the frame body 210 can be provided with a plug-in block 212. The insulating frame 410 can be provided with a plug-in groove and form a gap with the housing body. The plug-in block 212 can be plugged into the plug-in groove and fit with the housing body. In this way, the assembly between the frame body 210 and the insulating frame 410 can be completed by plugging, and the operation is simple. It should be noted that after the insulating frame 410 is provided with a plug-in groove, the above-mentioned gap is formed with the housing body.

[0043] In the present disclosure, the number and positions of the insertion slots can also be arranged in any suitable manner. As an exemplary embodiment, the number of the insertion slots can be two, and the two insertion slots can be arranged at opposite ends of the insulating bracket 410 so that the insulating bracket 410 is in a T shape. In this way, after the bracket body 210 is assembled on the insulating bracket 410, it can be avoided that the bracket body 210 disengages from the insulating bracket 410 in other directions perpendicular to the first direction, so as to ensure the stability of the bracket body 210 after insertion, and further avoid the support bracket 200 disengaging from the insulating bracket 410 during the vibration of the battery housing.

[0044] In the battery housing provided by the present disclosure, the split member 220 and the bracket body 210 can be installed in any suitable manner. As an exemplary embodiment, referring to Figures 5 to 8 as shown in, the split member 220 can be connected to the bracket body 210 through a snap-fit structure. The snap-fit structure can include a card slot and a snap block 221 that cooperate with each other. One of the split member 220 and the bracket body 210 can be provided with a card slot, and the other can be provided with a snap block 221. In this way, the assembly between the bracket body 210 and the split member 220 can be completed by snap-fitting, and the operation is simple. In other embodiments, the split member 220 and the bracket body 210 can also be connected in other suitable ways, such as bonding, or can be connected by a combination of snap-fitting and bonding. The present disclosure does not make specific limitations on this.

[0045] In the battery housing provided by the present disclosure, the sleeve hole can be constructed in any suitable manner. As an exemplary embodiment, referring to Figures 5 to 8 as shown in, the bracket body 210 can include a first boss 213. The first boss 213 can extend from the bracket body 210 away from the terminal assembly 400 and form a first arc surface 2131. A card slot can be formed on the end surface of the first boss 213 in the first direction. The split member 220 can include a second boss 222. The second boss 222 can form a second arc surface 2221 and a snap block 221. The snap block 221 can be snap-fitted into the card slot. The first arc surface 2131 and the second arc surface 2221 can be joined together to form the inner wall surface of the sleeve hole. Among them, the shapes of the first arc surface 2131 and the second arc surface 2221 are adapted to the shape of the outer wall surface of the extension portion 110. In this embodiment, at least a part of the extension portion 110 can be constructed as a circular ring, and the first arc surface 2131 and the second arc surface 2221 can be symmetric arc surfaces. In this way, after the first boss 213 and the second boss 222 are snap-fitted and installed, the first arc surface 2131 and the second arc surface 2221 can be respectively attached to both sides of the circular ring of the extension portion 110 in the first direction, and the first boss 213 and the second boss 222 can respectively abut against both sides of the circular ring of the extension portion 110 in the first direction to strengthen the structural strength of the extension portion 110.

[0046] In this embodiment, the shapes of the clamping block 221 and the clamping groove can be constructed in any suitable manner, such as cylindrical, triangular, etc., and the present disclosure does not make specific limitations thereto. In another embodiment, the frame body 210 can also be provided with a clamping block 221, and the split member 220 can also be provided with a clamping groove, and the present disclosure does not make specific limitations thereto.

[0047] In the present disclosure, the support frame 200 can be constructed of any suitable material. As an exemplary embodiment, the support frame 200 can be made of PPS material added with glass fiber. In another exemplary embodiment, the first boss 213 and the second boss 222 can be independently made of metal material, and other parts of the frame body 210 can be made of PPS material added with glass fiber, and then the first boss 213 is injection-molded and installed on the frame body 210. In this way, the support effect of the support frame 200 on the extension portion 110 can be ensured.

[0048] In the battery housing provided by the present disclosure, in order to further improve the structural strength of the extension portion 110, as an exemplary embodiment, refer to Figures 5 to 9 as shown in, the frame body 210 can include a first support surface 214. The first support surface 214 can extend from the frame body 210 away from the terminal assembly 400 and be in contact with the end surface of the first boss 213. The split member 220 can include a connecting flange. The connecting flange can be connected to the second boss 222 and protrude radially outward along the second boss 222. The connecting flange can be formed with a second support surface 223. The second support surface 223 can extend obliquely from the edge of the connecting flange toward the end surface of the second boss 222. The extension portion 110 can include a support section 111. The support section 111 can extend obliquely from the housing body toward the accommodation space, and at least part of the support section 111 can be supported on the first support surface 214 and the second support surface 223.

[0049] That is to say, the support section 111 can be arranged obliquely with respect to the housing body. At least part of the first support surface 214 and the second support surface 223 can be attached to the side of the support section 111 close to the accommodation space to support the support section 111. After the battery is filled with liquid, the device for inserting the seal 310 will abut against the support section 111 to facilitate inserting the seal 310 into the extension portion 110. In this way, the first support surface 214 and the second support surface 223 can strengthen the structural strength of the support section 111 to prevent the support section 111 from being deformed by the device being squeezed. Among them, there can be a gap between part of the support section 111 and the first support surface 214, and between part of the support section 111 and the second support surface 223, which can avoid movement interference between the support frame 200 and the housing body during the assembly process.

[0050] In the battery housing provided by the present disclosure, the extension portion 110 can be constructed in any suitable manner. As an exemplary embodiment, referring to Figure 9 as shown in Figure 9 , the extension portion 110 may further include a connecting section 112 and a mating section 113. The connecting section 112 can be connected between the supporting section 111 and the mating section 113 and overlap the first boss 213 and the second boss 222. The mating section 113 can extend from the connecting section 112 toward the accommodating space. The first arc surface 2131 and the second arc surface 2221 can jointly enclose the mating section 113. That is to say, the end faces of the first boss 213 and the second boss 222 can abut against one side of the connecting section 112 close to the accommodating space to support the connecting section 112 and strengthen the structural strength of the connecting section 112. In this embodiment, the mating section 113 can be constructed as the above-mentioned ring and extend into the above-mentioned sleeving hole.

[0051] Wherein, chamfers can be provided between the connecting section 112 and the supporting section 111, and between the connecting section 112 and the mating section 113 to ensure that the connecting section 112 can be smoothly connected to the supporting section 111 and the mating section 113 respectively. In addition, the supporting section 111, the connecting section 112 and the mating section 113 can jointly form a funnel-shaped extension portion 110. The first supporting surface 214, the second supporting surface 223, the first boss 213 and the second boss 222 jointly form a structure adapted to the funnel shape to support the extension portion 110.

[0052] In summary, the first supporting surface 214 and the second supporting surface 223 can strengthen the structural strength of the supporting section 111, and the first boss 213 and the second boss 222 can strengthen the structural strength of the connecting section 112 and the mating section 113.

[0053] In the battery housing provided by the present disclosure, in order to ensure the sealing effect of the seal 310, as an exemplary embodiment, referring to Figure 9 as shown in Figure 9 , the inner diameter of the sleeving hole can be K, the diameter of the seal 310 can be d, the wall thickness of the extension portion 110 can be T, and the gap between the first arc surface 2131 or the second arc surface 2221 and the mating section 113 can be L, [d / (K - 2T - 2L)] ≥ 1.1, preferably [d / (K - 2T - 2L)] = 1.2. In this way, the sealing effect of the seal 310 on the mating section 113 can be ensured.

[0054] Wherein, the gap L between the first arc surface 2131 or the second arc surface 2221 and the mating section 113 can be greater than or equal to 0.05 mm. In this embodiment, the gap L can be 0.05 mm, 0.07 mm, 0.09 mm, etc. The present disclosure does not make specific limitations on this.

[0055] Preferably, the gap L between the first arc surface 2131 or the second arc surface 2221 and the mating section 113 may be equal to 0.10 mm.

[0056] In the battery housing provided by the present disclosure, in order to further ensure the sealing effect of the battery housing, as an exemplary embodiment, referring to Figure 1 , Figure 2 and Figure 9 as shown, the battery housing may further include a sealing cover 320, and the sealing cover 320 may be disposed on the opening 120 and be sealingly connected to the housing body. Wherein, the sealing cover 320 may be configured in a cap shape, and the brim of the sealing cover 320 can fit the housing body. In this way, the sealing cover 320 can block the opening 120 and at the same time protect the seal 310. In the present disclosure, the sealing cover 320 may be made of any suitable material. As an exemplary embodiment, the sealing cover 320 may be configured as a sealing aluminum nail. In this way, the structural strength of the sealing cover 320 can be ensured, and the sealing cover 320 can be installed by means of welding or the like, which is convenient for processing and can ensure the sealing effect of the sealing cover 320.

[0057] In the present disclosure, the outer shell 100 may be configured in any suitable manner. As an exemplary embodiment, referring to Figure 1 as shown, the outer shell 100 may include a first shell 130 and a second shell 140. The first shell 130 may be configured in a plate shape, and the second shell 140 may be configured in a semi-surrounding structure with an opening on one side. The opening side of the second shell 140 may have a flange extending away from the accommodation space. The first shell 130 is disposed on the opening side of the second shell 140 and is laser welded to the flange. Specifically, after the first shell 130 and the flange are overlapped, a laser can be used to penetrate the flange from the first shell 130 to weld the two together to seal the opening side of the second shell 140.

[0058] In the present disclosure, the second shell 140 may be configured in any suitable manner. As an exemplary embodiment, referring to Figure 1 as shown, the side of the second shell 140 facing away from the first shell 130 may be recessed toward the accommodation space to form an accommodation portion 141. In this way, when the batteries are grouped, the accommodation portion 141 can be used to accommodate the terminal assembly 400 of the battery adjacent to the current battery. In this way, the space utilization rate after the batteries are grouped can be improved.

[0059] In the present disclosure, in order to further improve the structural strength of the support frame 200, the support frame 200 may include a connecting frame body 230 and support seats 240 connected to both ends of the connecting frame body 230. The avoidance opening 211, the first boss 213, and the second boss 222 may be formed on one of the support seats 240. The support seat 240 may be configured as a hollow shell seat and include a support plate 241 and a strengthening structure. The support plate 241 is attached to the first housing 130 for supporting the first housing 130. In this way, during the battery liquid injection process, the first housing 130 can be prevented from being deformed by the liquid injection nozzle. Among them, the strengthening structure may include a first reinforcing rib 242 and a second reinforcing rib 243, and the first reinforcing rib 242 and the second reinforcing rib 243 may be arranged in a cross shape. In this way, not only can the structural strength of the support frame 200 be guaranteed to be improved, but also the weight of the support frame 200 can be reduced, which is beneficial to the lightweight of the battery. In addition, the side of the connecting frame body 230 facing the accommodation space has an avoidance space for avoiding the pole ear adapter of the battery. In addition, there is a gap between the bottom surface of the installed support frame 200 and the second housing 140 to avoid assembly interference.

[0060] According to a second aspect of the present disclosure, there is provided a battery, which includes the above battery housing.

[0061] According to a third aspect of the present disclosure, there is provided a battery pack, which includes the above battery.

[0062] According to a fourth aspect of the present disclosure, there is provided an electrical device, which includes the above battery, or the electrical device includes the above battery pack. In the present disclosure, the electrical device may be any suitable electrical device such as a mobile phone, a portable device, a laptop computer, a vehicle (such as a fuel vehicle, a gas vehicle, or a new energy vehicle, etc.), and the present disclosure does not make specific limitations thereto.

[0063] During the liquid injection process of the battery housing provided by the present disclosure, the electrolyte can be injected into the interior of the battery housing from the opening 120 along the extension portion 110. After the liquid injection is completed, the seal 310 can penetrate into the extension portion 110 and undergo elastic deformation under the extrusion of the extension portion 110 to seal the extension portion 110. During this process, the first support surface 214 and the second support surface 223 of the support frame 200 can abut against the outside of the extension portion 110 to ensure the structural strength of the extension portion 110, and further ensure the extrusion effect of the extension portion 110 on the seal 310.

[0064] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0065] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0066] In addition, any combination can be made among the various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A battery housing, characterized in that: The battery casing includes an outer shell, a support frame and a sealing member, the outer shell includes a shell body and an extension portion, the shell body forms a accommodating space and is provided with an opening, the extension portion is connected to the shell body and extends from the opening toward the accommodating space, the support frame is arranged in the accommodating space, at least a portion of the support frame is sleeved on the extension portion and abuts against the extension portion, the sealing member is installed on the extension portion through the opening, and the sealing member is squeezed by the extension portion to undergo elastic deformation so as to sealably cooperate with the extension portion.

2. The battery housing according to claim 1, characterized in that: The battery housing includes a terminal assembly, the housing body is provided with a terminal mounting portion for mounting the terminal assembly, and the terminal mounting portion is spaced apart from the opening. The terminal assembly comprises an insulating frame, which is arranged in the accommodating space and connected to the shell body, and the supporting frame is connected to the insulating frame.

3. The battery housing according to claim 2, characterized in that: The support frame is plug-connected with the insulating frame.

4. The battery case according to claim 3, characterized in that: The support frame includes a frame body and a split piece, the frame body is provided with an avoidance opening, the frame body is plugged and connected to the insulating frame along a first direction, the extension portion extends into the avoidance opening along the first direction, the split piece is connected to the frame body and together with the frame body forms a sleeve hole for sleeve-mounting the extension portion, and the first direction is perpendicular to the extension direction of the extension portion.

5. The battery casing according to claim 4, characterized in that: The frame body is connected to the insulating frame through a plug-in structure, and the plug-in structure includes a plug-in slot and a plug-in block that cooperate with each other. The plug-in slot extends along the first direction. One of the frame body and the insulating frame is provided with the plug-in slot, and the other is provided with the plug-in block.

6. The battery case according to claim 4, characterized in that: The split piece is connected to the frame body via a snap-fit ​​structure, wherein the snap-fit ​​structure comprises a snap slot and a snap block that cooperate with each other, and one of the split piece and the frame body is provided with the snap slot, and the other is provided with the snap block.

7. The battery casing according to claim 6, characterized in that: The frame body includes a first boss, the first boss extends from the frame body away from the terminal assembly and is formed with a first arc surface, and the end surface of the first boss in the first direction is formed with the card slot, The split piece includes a second boss, the second boss is formed with a second arc-shaped surface and the clamping block, the clamping block is clamped in the clamping groove, and the first arc-shaped surface and the second arc-shaped surface are spliced ​​to form the inner wall surface of the sleeve hole.

8. The battery casing according to claim 7, characterized in that: The frame body includes a first supporting surface, the first supporting surface extends from the frame body away from the terminal assembly and is connected to the end surface of the first boss. The split piece includes a connecting flange, the connecting flange is connected to the second boss and protrudes outwardly along the radial direction of the second boss, the connecting flange is formed with a second supporting surface, and the second supporting surface extends obliquely from the edge of the connecting flange toward the end surface of the second boss, The extension portion includes a support segment, the support segment extends obliquely from the shell body toward the accommodating space, and at least a portion of the support segment is supported by the first support surface and the second support surface.

9. The battery casing according to claim 8, characterized in that: The extension portion also includes a connecting section and a matching section, the connecting section is connected between the supporting section and the matching section and overlaps the first boss and the second boss, the matching section extends from the connecting section toward the accommodating space, and the first arcuate surface and the second arcuate surface jointly surround the matching section.

10. The battery casing according to claim 9, characterized in that: The inner diameter of the sleeve hole is K, the diameter of the seal is d, the wall thickness of the extension portion is T, the gap between the first arcuate surface or the second arcuate surface and the matching section is L, [d / (K-2T-2L)]≥1.

1.

11. The battery housing according to claim 10, characterized in that: A gap L between the first arcuate surface or the second arcuate surface and the matching segment is greater than or equal to 0.05 mm.

12. The battery casing according to claim 11, characterized in that: A gap L between the first arcuate surface or the second arcuate surface and the matching segment is equal to 0.10 mm.

13. The battery housing according to any one of claims 1 to 12, characterized in that: The battery housing further comprises a sealing cover, which is disposed on the opening and is sealed and connected to the housing body.

14. A battery, characterized in that: The battery comprises a battery housing according to any one of claims 1-13.

15. A battery pack, characterized in that: The battery pack includes the battery according to claim 14.

16. An electrical equipment, characterized in that: The electric device comprises the battery according to claim 14, or the electric device comprises the battery pack according to claim 15.

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